{
  "manageEntity": {
    "action": "Update",
    "entityId": "328056745",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xa4d65d732e9896fa798db78234dd746a8415d87acf94b3228484ae2126d1edb3",
    "signature": "0x814cacc3c741ff5f1785e5b908ddbebc8d3c2b2b1dada3f723cf8874f4fe6a1803fbdff55faa18e635b332eff40101262e82bdec040f9bb38f9527b70e8463cd1b",
    "signer": "0x75d782C5a68f76DfA69c426479B6ad14383D035f",
    "userId": "328056745"
  }
}